[gn build] Port 7964b66 (#200914)

aeubanks · web-flow · commit 27d344d36eca · 2026-06-01T12:42:34.000-07:00
diff --git a/llvm/utils/gn/build/write_cmake_config.py b/llvm/utils/gn/build/write_cmake_config.py
@@ -53,6 +53,10 @@ def main():
         if key in values:
             print('duplicate key "%s" in args' % key, file=sys.stderr)
             return 1
+        if val.startswith("@file:"):
+            file_path = val[len("@file:"):]
+            with open(file_path) as f:
+                val = f.read()
         values[key] = val.replace("\\n", "\n")
     unused_values = set(values.keys())
 
diff --git a/llvm/utils/gn/secondary/llvm/lib/Transforms/IPO/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Transforms/IPO/BUILD.gn
@@ -1,6 +1,20 @@
+import("//llvm/utils/gn/build/write_cmake_config.gni")
+
+write_cmake_config("write_instrumentor_variables") {
+  input = "//llvm/include/llvm/Transforms/IPO/InstrumentorVariables.inc.in"
+  output =
+      "$root_gen_dir/llvm/include/llvm/Transforms/IPO/InstrumentorVariables.inc"
+  values =
+      [ "LLVM_INSTRUMENTOR_RUNTIME_HELPER=@file:" +
+        rebase_path(
+            "//llvm/include/llvm/Transforms/IPO/InstrumentorRuntimeHelper.h",
+            root_build_dir) ]
+}
+
 static_library("IPO") {
   output_name = "LLVMipo"
   deps = [
+    ":write_instrumentor_variables",
     "//llvm/lib/Analysis",
     "//llvm/lib/Bitcode/Reader",
     "//llvm/lib/Bitcode/Writer",
